Mick Jagger, 70, leaves his hotel in Vienna with former lover Jerry Hall, 57, and their son, Gabriel, 16. (splash)

Shane made her comments after learning the Rolling Stones front man first crossed paths with the New York ballet dancer, who's 43 years his junior, in Tokyo, where the so called "World's Greatest Rock Band" performed on Feb. 24.

The pair didn't hook up until after Scott's death by suicide in March, according to reports.

Mick Jagger reportedly met his new lover weeks before the suicide of his girlfriend L'Wren Scott (pictured). (Jon Furniss/Invision/AP)

But Scott's estranged older sister said she wasn't shocked to learn that the 70-year-old sex machine was already catting around with a hot young mistress.

"It doesn't surprise me at all. I'm just really glad that L'Wren doesn't have to put up with him anymore," Shane said. "She had accomplished so much without him. She was amazing in so many people's eyes. He just needs to quit dragging her name through his crap!"

The single life appeared to be treating the wrinkly rocker well at a Father's Day meetup with his ex-wife, his daughter and a son in Vienna ahead of a concert the Stones are due to give in the city Monday night.

The father of at least seven was all smiles as he exited the hotel with his former lover Jerry Hall, 57; daughter Georgia May, 22; and son Gabriel, 16.